Device for researching gas / particle phase distribution of flavor components of heated cigarettes

Abstract

The utility model provides a device for researching gas / particle phase distribution of heated cigarette flavor components, and belongs to the technical field of smoke aerosol testing. The device comprises a heating pipe, one end of the heating pipe is provided with a first connector used for being connected with a cigarette smoking end on a smoking machine, the other end of the heating pipe is provided with a second connector used for being connected with a Cambridge filter on the smoking machine, and the heating pipe is internally provided with a passing space for aerosol to pass through. The heating pipe is provided with a heating body used for heating aerosol passing through the heating pipe. According to the utility model, the heating pipe is used for heating the passing aerosol to promote the particle-phase moisture in the aerosol to be quickly converted into gas-phase moisture and change the gas / particle-phase distribution ratio of the moisture, so that the gas / particle-phase distribution ratio of flavor components is regulated and controlled on line, the gas / particle-phase distribution rule of the flavor components with different polarities and boiling points is mastered, and the quality of the flavor components is improved. And guidance is provided for classified regulation and formula optimization of different types of flavor components of the heated cigarettes.

Description

Technical Field

[0001] The utility model relates to a device for studying gas / particle distribution of flavor components of heated cigarettes, belonging to the technical field of smoke aerosol testing. Background Art

[0002] Tobacco products are usually consumed in the form of aerosols, and the distribution ratio of flavor components in the gas / particle phase has an important impact on consumer perception. Heated cigarettes generally add atomizers (such as glycerin) to tobacco or reconstituted tobacco leaves to overcome the difficulty in forming aerosols due to the low heating temperature (200~400℃) during smoking, resulting in its aerosol being mainly composed of water and atomizers. However, due to its low boiling point, water undergoes significant dynamic changes during the smoke delivery process of heated cigarettes, causing changes in the polarity of the aerosol particle phase, which in turn affects the distribution ratio of flavor components in the gas / particle phase. Therefore, conducting research on the gas / particle distribution of flavor components in heated cigarettes is of great value and significance in guiding the classification, regulation and formulation optimization of different types of flavor components in heated cigarettes.

[0003] A Chinese invention patent application with application publication number CN111879598A discloses a method for capturing aerosols of heat-not-burn cigarette smoke and a method for testing cytotoxicity. The capturing method is to use a linear smoking machine to smoke a heat-not-burn cigarette test sample using a Canadian deep smoking mode, and during the smoking process, a Cambridge filter is used to capture total particulate matter in the smoke, and dimethyl sulfoxide is used to absorb the gas phase of the smoke that passes through the Cambridge filter. After the capturing is completed, dimethyl sulfoxide is used to extract the total particulate matter in the smoke captured on the Cambridge filter, and the dimethyl sulfoxide with the extracted total particulate matter in the smoke and the dimethyl sulfoxide with the absorbed gas phase in the smoke together constitute the captured smoke aerosol.

[0004] The above technical scheme is to capture the aerosol to obtain the extract of the smoke aerosol, and then conduct a cytotoxicity test on the extract of the smoke aerosol to understand the toxic effects of heat-not-burn cigarettes. It cannot online regulate the distribution ratio of flavor components in the gas / particle phase of the aerosol, and thus cannot understand the gas / particle distribution law of flavor components with different polarities and boiling points, and cannot provide guidance for the classification regulation and formula optimization of different types of flavor components in heated cigarettes. Utility Model Content

[0005] The utility model aims to provide a device for studying the gas / particle distribution of flavor components in heated cigarettes, so as to solve the problem in the prior art that the distribution ratio of flavor components in the gas / particle phase of aerosol cannot be adjusted online when studying the aerosol of heated cigarettes.

[0006] To achieve the above-mentioned purpose, the device for studying the gas / particle distribution of heated cigarette flavor components in the utility model adopts the following technical scheme:

[0007] A device for studying the gas / particle distribution of flavor components of heated cigarettes comprises a heating tube, one end of the heating tube is provided with a first interface for connecting to the suction end of a cigarette on a smoking machine, the other end of the heating tube is provided with a second interface for connecting to a Cambridge filter on the smoking machine, the heating tube has a passage space for aerosol to pass through, and the heating tube is provided with a heating body for heating the passing aerosol.

[0008] The beneficial effect of the above technical solution is that: the utility model proposes a pioneering device for studying the gas / particle distribution of flavor components of heated cigarettes, the device comprises a heating tube, one end of the heating tube is provided with a first interface for connecting to the cigarette suction end of the smoking machine, and the other end of the heating tube is provided with a second interface for connecting to the Cambridge filter on the smoking machine, so that the heating tube can be connected between the cigarette suction end of the smoking machine and the Cambridge filter through the first interface and the second interface; the heating tube has a passage space for aerosol to pass through, ensuring that the aerosol generated by the heated cigarette can be transported backward to the Cambridge filter through the heating tube for subsequent detection; the heating tube is provided with a heating body for heating the passing aerosol, and the heating of the aerosol by the heating body can promote the rapid conversion of the particle phase moisture in the aerosol to the gas phase moisture, change the water gas / particle phase distribution ratio, and then regulate the flavor component gas / particle phase distribution ratio, master the gas / particle phase distribution law of flavor components with different polarity and boiling point, and provide guidance for the classification regulation and formulation optimization of different types of flavor components in heated cigarettes. Since the heating tube is directly connected between the smoking end of the cigarette and the Cambridge filter, online regulation can be achieved.

[0009] Furthermore, the heating body is a heating wire arranged in the passing space.

[0010] Furthermore, more than two heating wires are provided, and the heating wires are arranged in parallel and at intervals.

[0011] Furthermore, the heating wires are arranged in the same plane perpendicular to the length direction of the heating tube.

[0012] Furthermore, the intervals between two adjacent heating wires are equal.

[0013] Furthermore, the heating tube includes a metal tube and a heat insulating layer covering the outside of the metal tube, the inner hole of the metal tube constitutes the passing space, and the heating wire is arranged in the metal tube.

[0014] Furthermore, the heating wire is arranged at a middle position in the length direction of the heating tube.

[0015] Furthermore, the heating tube is formed by detachably connecting at least two split tubes, and each split tube is provided with the heating body.

[0016] Furthermore, two adjacent split tubes are detachably connected via a ferrule, and ends of the two adjacent split tubes are respectively inserted into the ferrules.

[0017] Furthermore, the heating tube is a cylindrical tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of an embodiment of the device for studying the gas / particle distribution of flavor components in heated cigarettes according to the utility model;

[0019] Figure 2 It is a cross-sectional schematic diagram of a split tube in an embodiment of the device for studying gas / particle distribution of flavor components in heated cigarettes of the utility model;

[0020] Figure 3 It is a side view schematic diagram of a split tube in an embodiment of the device for studying gas / particle distribution of heated cigarette flavor components of the utility model.

[0021] In the figure: 100, heating tube; 101, first interface; 102, second interface; 1, split tube; 11, metal tube; 12, thermal insulation layer; 13, heating wire; 2, ferrule. DETAILED DESCRIPTION

[0022] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0023] In response to the technical problems in the prior art, the basic technical concept of the utility model is to connect a heating tube between the cigarette suction end of the smoking machine and the Cambridge filter. The heating tube is provided with a heating body, which can heat the passing aerosol, promote the rapid conversion of the particle phase moisture in the aerosol to the gas phase moisture, change the water gas / particle phase distribution ratio, and then online regulate the flavor component gas / particle phase distribution ratio.

[0024] Embodiment of the device for studying gas / particle distribution of heated cigarette flavor components in the utility model:

[0025] like Figure 1 As shown, the device for studying the gas / particle distribution of flavor components of heated cigarettes includes a heating tube 100, one end of the heating tube 100 is provided with a first interface 101 for connecting to the cigarette suction end of the smoking machine, and the other end of the heating tube 100 is provided with a second interface 102 for connecting to the Cambridge filter on the smoking machine. Therefore, the heating tube 100 can be connected between the cigarette suction end of the smoking machine and the Cambridge filter through the first interface 101 and the second interface 102, and the specific connection method is plug-in.

[0026] The heating tube 100 has a passage space for aerosol to pass through, ensuring that the aerosol generated by the heated cigarette can be transported backward to the Cambridge filter through the heating tube 100 for subsequent detection. At the same time, the heating tube 100 is provided with a heating body for heating the passing aerosol. By heating the aerosol by the heating body, the particle phase moisture in the aerosol can be quickly transformed into gas phase moisture, and the water gas / particle phase distribution ratio can be changed, thereby online regulating the flavor component gas / particle phase distribution ratio, mastering the gas / particle phase distribution law of flavor components with different polarity and boiling point, and providing guidance for the classification regulation and formulation optimization of different types of flavor components in heated cigarettes.

[0027] Specifically in this embodiment, the heating tube 100 is a cylindrical tube as a whole, and the first interface 101 and the second interface 102 are circular ports at both ends of the cylindrical tube, which can be directly plugged into the cigarette suction end and the Cambridge filter during installation. The structure is simple and easy to manufacture. Figure 1 As shown, the heating tube 100 is composed of two split tubes 1 that are detachably connected. Each split tube 1 is a cylindrical tube. Since aerosols are easily deposited on the heating tube 100, it should be cleaned in time after use. If the heating tube 100 is too long, it is inconvenient to clean. After being set into two segments, the length of each segment is not very long, which is convenient for cleaning and maintenance. Specifically, the two split tubes 1 are detachably connected through the ferrule 2, and the ends of the two split tubes 1 are respectively inserted into the ferrule 2. This method has a simple structure, is convenient for processing and manufacturing, and is also convenient for assembly and disassembly.

[0028] like Figure 2 and Figure 3 As shown, the above-mentioned heating body is a heating wire 13 arranged in the passing space. The heating wire 13 is an electric heating wire. Compared with the heating of the metal layer of the pipe wall, it has the advantages of fast heating speed and short equilibrium time. The heating wire 13 is connected to a control unit for controlling its heating temperature and heating time to meet the requirements of different heating temperatures and heating times.

[0029] In this embodiment, if Figure 2 As shown, the split pipe 1 includes a metal pipe 11 and a heat insulating layer 12 covering the outside of the metal pipe 11. The inner hole of the metal pipe 11 constitutes the above-mentioned passing space, and the heating wire 13 is arranged in the metal pipe 11. By arranging the heat insulating layer 12, the temperature loss in the metal pipe 11 can be avoided, and it can also be avoided that the surface temperature of the metal pipe 11 is too high and burns the operator when only the metal pipe 11 is arranged.

[0030] like Figure 3As shown, a plurality of heating wires 13 are provided, and each heating wire 13 is arranged in parallel and at intervals, so that the aerosol can pass through the gaps between the heating wires 13, and heat the aerosol while passing through. At the same time, each heating wire 13 is arranged in the same plane perpendicular to the length direction of the heating tube 100, which is convenient for arrangement and control of the heating effect on the aerosol. Of course, this is for one split tube 1. In fact, each split tube 1 is provided with a heating wire 13, and the arrangement method is the same. Furthermore, the spacing between two adjacent heating wires 13 is equal to ensure that the passing aerosol is heated evenly. And, as Figure 2 As shown, the heating wire 13 is arranged in the middle position in the length direction of the split tube 1, which can reduce the impact on the smoking end of the cigarette and the Cambridge filter.

[0031] The steps of using the device for studying the gas / particle distribution of heated cigarette flavor components of the utility model are as follows:

[0032] 1) Connect the first interface 101 of the heating tube 100 to the cigarette suction end of the smoking machine, and connect the second interface 102 to the Cambridge filter;

[0033] 2) Loading the heated cigarette into the smoking machine fixture;

[0034] 3) Start the control unit of the heating wire 13 and keep it at the set temperature for 1 to 2 minutes;

[0035] 4) The smoking machine is started to smoke the heated cigarette, and the mainstream smoke aerosol is heated by the heating tube 100 to achieve online regulation of the gas / particle distribution of flavor components;

[0036] 5) The heated mainstream smoke aerosol is separated into gas phase and particle phase through Cambridge filter, and then collected and detected separately.

[0037] In summary, the utility model utilizes the characteristics of high water content and large dynamic changes of heated cigarette aerosol, and sets equidistantly distributed heating wires 13 in the heating tube 100 through which the mainstream smoke aerosol of heated cigarette passes for uniform heating, and each split tube 1 is provided with a heating wire 13, so as to achieve step-by-step heating, promote the rapid transformation of particle phase moisture to gas phase moisture, change the water gas / particle phase distribution ratio, and then regulate the flavor component gas / particle phase distribution ratio. By examining the influence of different temperatures of the heating wire 13, the gas / particle phase distribution law of flavor components with different polarities and boiling points can be obtained, thereby providing guidance for the classification and regulation of different types of flavor components and formula optimization of heated cigarettes.

[0038] In other embodiments of the device for studying the gas / particle distribution of flavor components in heated cigarettes: the heating tube can also be formed by detachably connecting three, four or more split tubes, and the detachable connection method can be used not only by using a ferrule, but also by directly connecting two adjacent split tubes through a threaded structure. In other embodiments, when the heating tube is formed by detachably connecting more than two split tubes, the heating wire can also be set in only one of the split tubes.

[0039] In other embodiments of the device for studying gas / particle distribution of flavor components in heated cigarettes: the heating tube may also be formed by one tube without being divided into sections.

[0040] In other embodiments of the device for studying the gas / particle distribution of flavor components in heated cigarettes: regardless of whether the heating tube is an integral tube or multiple separate sections, the heating tube may not be a cylindrical tube. For example, the outer circumference of the heating tube is a hexagonal prism, and the inner hole is a cylindrical hole. The orifice of the cylindrical hole forms an interface for connection with the smoking end of the cigarette and the Cambridge filter.

[0041] In other embodiments of the device for studying the gas / particle distribution of flavor components in heated cigarettes: when the heating tube is an integrated tube, each heating wire can be directly set in the middle position in the length direction of the heating tube, and of course can also be set at the end close to the smoking end of the cigarette; in other embodiments, when the heating tube is divided into multiple sections, the heating wires in each section of the split tube can also be arranged at the end close to the smoking end of the cigarette.

[0042] In other embodiments of the device for studying the gas / particle distribution of heated cigarette flavor components: the heating wire can also be embedded in the inner wall of the metal tube; in other embodiments, the heating tube may not include an insulating layer, but only a metal tube, and the heating wire can also be set on the outer surface of the metal tube.

[0043] In other embodiments of the device for studying gas / particle distribution of flavor components in heated cigarettes: the heating tube may also be a ceramic tube, and the heating wire is arranged inside the ceramic tube.

[0044] In other embodiments of the device for studying gas / particle distribution of heated cigarette flavor components: the spacing between two adjacent heating wires may also be unequal, for example, the spacing between the heating wires in the middle is large, and the spacing is smaller as it approaches the edge.

[0045] In other embodiments of the device for studying the gas / particle distribution of flavor components in heated cigarettes: the heating wires may not be in the same plane perpendicular to the length direction of the heating tube, and the arrangement plane where the heating wires are located is arranged at an acute angle to the length direction of the heating tube. For example, when the heating tube is a cylindrical tube, the arrangement plane is an elliptical surface.

[0046] In other embodiments of the device for studying the gas / particle distribution of flavor components in heated cigarettes: when the heating wires are arranged in parallel and spaced apart, they may not be in the same arrangement plane, for example, they may be divided into multiple rows, and the multiple rows of heating wires are arranged in spaced apart manner along the length direction of the heating tube, and each row includes at least two heating wires.

[0047] In other embodiments of the device for studying the gas / particle distribution of flavor components in heated cigarettes: there may be only one heating wire, and when the heating tube is a cylindrical tube, the heating wire is arranged radially along the heating tube; of course, in other embodiments, there may be only two heating wires, and the two heating wires are parallel and symmetrically arranged relative to the plane passing through the center of the heating tube.

[0048] In other embodiments of the device for studying the gas / particle distribution of heated cigarette flavor components: the heating body may not be a heating wire, for example, it may be a heating plate with a flow channel inside, the heating plate is wrapped around the outside of the heating tube, and heat is transferred to the heating tube, the flow channel inside the heating plate is connected to the heat exchange device, and a high-temperature medium, such as hot water or hot air, flows in the flow channel. In other embodiments, induction heating can also be used, and the heating body is an energized heating coil.

[0049] In other embodiments of the device for studying the gas / particle distribution of flavor components of heated cigarettes: depending on the specific forms of the cigarette smoking end and the Cambridge filter, the connection between the first interface and the cigarette smoking end, and the connection between the second interface and the Cambridge filter can also be screwed.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the description and drawings of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for studying the gas / particle distribution of flavor components in heated cigarettes, characterized in that: It comprises a heating tube, one end of which is provided with a first interface for connecting to the suction end of a cigarette on a smoking machine, and the other end of which is provided with a second interface for connecting to a Cambridge filter on the smoking machine. The heating tube has a passage space for aerosol to pass through, and the heating tube is provided with a heating body for heating the passing aerosol.

2. The device for studying the gas / particle distribution of heated cigarette flavor components according to claim 1, characterized in that: The heating body is a heating wire arranged in the passage space.

3. The device for studying the gas / particle distribution of flavor components of heated cigarettes according to claim 2, characterized in that: There are more than two heating wires, and the heating wires are arranged in parallel and at intervals.

4. The device for studying the gas / particle distribution of heated cigarette flavor components according to claim 3, characterized in that: The heating wires are arranged in the same plane which is perpendicular to the length direction of the heating tube.

5. The device for studying gas / particle distribution of flavor components of heated cigarettes according to claim 3 or 4, characterized in that: The distances between two adjacent heating wires are equal.

6. The device for studying gas / particle distribution of heated cigarette flavor components according to any one of claims 2 to 4, characterized in that: The heating tube comprises a metal tube and a heat insulating layer covering the outside of the metal tube. The inner hole of the metal tube constitutes the passing space, and the heating wire is arranged in the metal tube.

7. The device for studying gas / particle distribution of heated cigarette flavor components according to any one of claims 2 to 4, characterized in that: The heating wire is arranged at the middle position in the length direction of the heating tube.

8. The device for studying gas / particle distribution of heated cigarette flavor components according to any one of claims 1 to 4, characterized in that: The heating tube is formed by detachably connecting at least two split tubes, and each split tube is provided with the heating body.

9. The device for studying gas / particle distribution of flavor components of heated cigarettes according to claim 8, characterized in that: Two adjacent split tubes are detachably connected via a clamping sleeve, and the ends of the two adjacent split tubes are respectively inserted into the clamping sleeve.

10. The device for studying gas / particle distribution of flavor components of heated cigarettes according to any one of claims 1 to 4, characterized in that: The heating tube is a cylindrical tube.

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